L-Cysteine 99% For Biochemistry
(R)-2-Amino-3-mercaptopropionic acid
Product Code. |
00923 |
Grade |
For Biochemistry |
Purity |
99% |
CAS No. |
52-90-4 |
Molecular Formula |
C3H7NO2S |
Molecular Weight |
121.16 |
H.S.Code |
2930.90400 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Colorless crystalline |
Melting point/ Freezing point [°C] |
220 °C |
| Solubility in water [% weight] |
Appreciable (> 10%) |
Packaging
Specification
| Appearance | Colorless crystalline powder |
| Assay | Min. 99.0% |
| Specific optical rotation ([?]20/D) | +8.0° to +9.0° |
| UV absorbance | Max. 0.5 |
| Loss on dryig (at 105°C; 4 hrs) | Max. 0.3% |
| Chloride (Cl) | Max. 0.002% |
| Sulphate (SO4) | Max. 0.01% |
| Heavy metal (as Pb) | Max. 0.001% |
| Ammonium (NH4) | Max. 0.01% |
| Foreign amino acids | Max. 0.5% |
| Other ninhydrin positive substances (as glycine) | Max. 0.1% |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302